40mm bend

[Jupiter01]

I need to put in a right angle bend for the pipe coming down from the basin and heading to the 110mm pipe.
Which one of these should I be using?

I read somewhere that the sweeping bend is preferable but would appreciate your advice.
Thanks in advance.

 

[denso13]

It doesn't matter.

 

[Jupiter01]

Is the 90 degree more prone to blockages or anything like that?
Thanks for repeatedly coming to my rescue @denso13. Much appreciated.

 

[denso13]

Not really, not on a basin waste, virtually all water.

 

[Madrab]

If it's a basin then it would normally be a 32mm fitting not 40mm - just in case -

I would always prefer to use swept bends rather than elbows. I find all sorts of 'stuff' gets dropped into basins and invariably when the waste and pipework gets glued up with soap scum and gunge then that can then cause problems. I have found swept bends will allow a snake etc to be run past it easier than a bend will. I have also found that they reduce drainage noise as swept bends won't create as much turbulence/resistance.

Best procedure though is good maintenance.

 

[Jupiter01]

If it's a basin then it would normally be a 32mm fitting not 40mm - just in case -

I would always prefer to use swept bends rather than elbows. I find all sorts of 'stuff' gets dropped into basins and invariably when the waste and pipework gets glued up with soap scum and gunge then that can then cause problems. I have found swept bends will allow a snake etc to be run past it easier than a bend will. I have also found that they reduce drainage noise as swept bends won't create as much turbulence/resistance.

Best procedure though is good maintenance.

I've gone with 40mm waste but can reduce down to 32mm when it comes to the basin wate fitting. I went with the swept bend in the end. Thanks